diff --git a/2.10/Source/FormRender.dfm b/2.10/Source/FormRender.dfm
index 0a83df3..9fe4734 100644
--- a/2.10/Source/FormRender.dfm
+++ b/2.10/Source/FormRender.dfm
@@ -49,13 +49,6 @@ object RenderForm: TRenderForm
   OnShow = FormShow
   PixelsPerInch = 96
   TextHeight = 13
-  object Label6: TLabel
-    Left = 204
-    Top = 340
-    Width = 118
-    Height = 13
-    Caption = 'TestValue Nr Of Threads'
-  end
   object ProgressBar: TProgressBar
     Left = 0
     Top = 392
@@ -469,16 +462,6 @@ object RenderForm: TRenderForm
     Caption = 'Post render'
     TabOrder = 9
   end
-  object edtNrThreads: TEdit
-    Left = 336
-    Top = 336
-    Width = 73
-    Height = 21
-    BiDiMode = bdRightToLeft
-    ParentBiDiMode = False
-    TabOrder = 13
-    Text = '1'
-  end
   object SaveDialog: TSaveDialog
     Left = 368
     Top = 256
diff --git a/2.10/Source/FormRender.pas b/2.10/Source/FormRender.pas
index 3db5fe2..ac39de3 100644
--- a/2.10/Source/FormRender.pas
+++ b/2.10/Source/FormRender.pas
@@ -66,8 +66,6 @@ type
     StatusBar: TStatusBar;
     chkShutdown: TCheckBox;
     cbPostProcess: TCheckBox;
-    edtNrThreads: TEdit;
-    Label6: TLabel;
     txtDensity: TComboBox;
     procedure FormCreate(Sender: TObject);
     procedure FormDestroy(Sender: TObject);
@@ -339,7 +337,7 @@ begin
     Renderer.Compatibility := compatibility;
     Renderer.SetCP(cp);
     Renderer.Priority := tpLower;
-    Renderer.NrThreads := StrToInt(edtNrThreads.text);
+    Renderer.NrThreads := NrTreads;
     Renderer.Resume;
 
     // enable screensaver
diff --git a/2.10/Source/Global.pas b/2.10/Source/Global.pas
index d7abc92..7b71ca4 100644
--- a/2.10/Source/Global.pas
+++ b/2.10/Source/Global.pas
@@ -127,7 +127,10 @@ var
   defLibrary: string;
   LimitVibrancy: Boolean;
   DefaultPalette: TColorMap;
-
+  PNGTransparency: integer;
+  ShowTransparency: boolean;
+  NrTreads: Integer;
+  UseNrThreads: integer;
 
 function Round6(x: double): double;
 
diff --git a/2.10/Source/ImageMaker.pas b/2.10/Source/ImageMaker.pas
index c02b4fa..d39db13 100644
--- a/2.10/Source/ImageMaker.pas
+++ b/2.10/Source/ImageMaker.pas
@@ -146,8 +146,10 @@ end;
 ///////////////////////////////////////////////////////////////////////////////
 function TImageMaker.GetImage: TBitmap;
 begin
-//  Result := GetTransparentImage;
-  Result := FBitmap;
+  if ShowTransparency then
+    Result := GetTransparentImage
+  else
+    Result := FBitmap;
 end;
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -193,8 +195,14 @@ end;
 ///////////////////////////////////////////////////////////////////////////////
 procedure TImageMaker.CreateImage(YOffset: integer);
 begin
-  CreateImage_Flame3(YOffset);
-//  CreateImage_MB(YOffset);
+  Case PNGTransparency of
+  0,1:
+    CreateImage_Flame3(YOffset);
+  2:
+    CreateImage_MB(YOffset);
+  else
+    Exception.CreateFmt('Unexpected value of PNGTransparency [%d]', [PNGTransparency]);
+  end;
 end;
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -586,13 +594,22 @@ begin
   if UpperCase(ExtractFileExt(FileName)) = '.PNG' then begin
     PngObject := TPngObject.Create;
     PngObject.Assign(FBitmap);
-    PngObject.CreateAlpha;
-    for i:= 0 to FAlphaBitmap.Height - 1 do begin
-      rowbm := PByteArray(FAlphaBitmap.scanline[i]);
-      rowpng := PByteArray(PngObject.AlphaScanline[i]);
-      for row := 0 to FAlphaBitmap.Width -1 do begin
-        rowpng[row] := rowbm[row];
+    Case PNGTransparency of
+    0:
+      ; // do nothing
+    1,2:
+      begin
+        PngObject.CreateAlpha;
+        for i:= 0 to FAlphaBitmap.Height - 1 do begin
+          rowbm := PByteArray(FAlphaBitmap.scanline[i]);
+          rowpng := PByteArray(PngObject.AlphaScanline[i]);
+          for row := 0 to FAlphaBitmap.Width -1 do begin
+            rowpng[row] := rowbm[row];
+          end;
+        end;
       end;
+    else
+      Exception.CreateFmt('Unexpected value of PNGTransparency [%d]', [PNGTransparency]);
     end;
 
     PngObject.SaveToFile(FileName);
diff --git a/2.10/Source/Options.dfm b/2.10/Source/Options.dfm
index b9eb493..1556970 100644
--- a/2.10/Source/Options.dfm
+++ b/2.10/Source/Options.dfm
@@ -161,6 +161,68 @@ object OptionsForm: TOptionsForm
         Caption = 'Resize on load'
         TabOrder = 5
       end
+      object GroupBox15: TGroupBox
+        Left = 8
+        Top = 134
+        Width = 129
+        Height = 83
+        Caption = 'PNG Transparency'
+        TabOrder = 6
+        object RadioButton1: TRadioButton
+          Left = 12
+          Top = 16
+          Width = 113
+          Height = 17
+          Caption = 'No transparency'
+          TabOrder = 0
+        end
+        object RadioButton2: TRadioButton
+          Left = 12
+          Top = 32
+          Width = 113
+          Height = 17
+          Caption = 'Like Flame3'
+          TabOrder = 1
+        end
+        object RadioButton3: TRadioButton
+          Left = 12
+          Top = 48
+          Width = 113
+          Height = 17
+          Caption = 'Like Flamesong'
+          TabOrder = 2
+        end
+      end
+      object GroupBox16: TGroupBox
+        Left = 140
+        Top = 134
+        Width = 117
+        Height = 51
+        Caption = 'Nr processors'
+        TabOrder = 7
+        object cbNrTheads: TComboBox
+          Left = 12
+          Top = 20
+          Width = 89
+          Height = 21
+          ItemHeight = 13
+          TabOrder = 0
+          Text = '200'
+          Items.Strings = (
+            'Off'
+            '2'
+            '4'
+            '8')
+        end
+      end
+      object cbShowTransparancy: TCheckBox
+        Left = 144
+        Top = 196
+        Width = 169
+        Height = 17
+        Caption = 'Show Transparancy'
+        TabOrder = 8
+      end
     end
     object DisplayPage: TTabSheet
       Caption = 'Display'
@@ -553,10 +615,11 @@ object OptionsForm: TOptionsForm
         object clbVarEnabled: TCheckListBox
           Left = 12
           Top = 16
-          Width = 205
+          Width = 309
           Height = 189
           ItemHeight = 13
           TabOrder = 0
+          TabWidth = 100
         end
       end
       object btnSetAll: TButton
diff --git a/2.10/Source/Options.pas b/2.10/Source/Options.pas
index 42b30ce..3f6120a 100644
--- a/2.10/Source/Options.pas
+++ b/2.10/Source/Options.pas
@@ -174,6 +174,13 @@ type
     Label37: TLabel;
     txtLibrary: TEdit;
     clbVarEnabled: TCheckListBox;
+    GroupBox15: TGroupBox;
+    RadioButton1: TRadioButton;
+    RadioButton2: TRadioButton;
+    RadioButton3: TRadioButton;
+    GroupBox16: TGroupBox;
+    cbNrTheads: TComboBox;
+    cbShowTransparancy: TCheckBox;
     procedure btnCancelClick(Sender: TObject);
     procedure FormShow(Sender: TObject);
     procedure btnOKClick(Sender: TObject);
@@ -250,6 +257,17 @@ begin
   chkFixedReference.Checked := FixedReference;
   udBatchSize.Position := BatchSize;
   chkResize.checked := ResizeOnLoad;
+  case PNGTransparency of
+  0: RadioButton1.Checked := True;
+  1: RadioButton2.Checked := True;
+  2: RadioButton3.Checked := True;
+  else
+  end;
+  if NrTreads <= 1 then
+    cbNrTheads.ItemIndex := 0
+  else
+    cbNrTheads.text := intTostr(NrTreads);
+  cbShowTransparancy.Checked := ShowTransparency;
 
   { Display tab }
   txtSampleDensity.Text := FloatToStr(defSampleDensity);
@@ -345,6 +363,16 @@ begin
   if BatchSize < 1 then BatchSize := 1;
   if BatchSize > 300 then BatchSize := 300;
 
+  if RadioButton1.Checked then
+    PNGTransparency := 0
+  else if RadioButton2.Checked then
+    PNGTransparency := 1
+  else if RadioButton3.Checked then
+    PNGTransparency := 2;
+
+  ShowTransparency := cbShowTransparancy.Checked;
+
+  NrTreads := StrToIntDef(cbNrTheads.text, 0);
   ConfirmDelete := chkConfirmDel.Checked;
   FixedReference := chkFixedReference.Checked;
   ResizeOnLoad := chkResize.checked;
diff --git a/2.10/Source/Regstry.pas b/2.10/Source/Regstry.pas
index bb14e90..98cd999 100644
--- a/2.10/Source/Regstry.pas
+++ b/2.10/Source/Regstry.pas
@@ -480,11 +480,29 @@ begin
       if Registry.ValueExists('ShowProgress') then
       begin
         ShowProgress := Registry.ReadBool('ShowProgress');
-      end
-      else
-      begin
+      end else begin
         ShowProgress := true;
       end;
+      if Registry.ValueExists('PNGTransparency') then begin
+        PNGTransparency := Registry.ReadInteger('PNGTransparency');
+      end else begin
+        PNGTransparency := 2
+      end;
+      if Registry.ValueExists('ShowTransparency') then begin
+        ShowTransparency := Registry.ReadBool('ShowTransparency');
+      end else begin
+        ShowTransparency := False;
+      end;
+      if Registry.ValueExists('NrTreads') then begin
+        NrTreads := Registry.ReadInteger('NrTreads');
+      end else begin
+        NrTreads := 1;
+      end;
+      if Registry.ValueExists('UseNrThreads') then begin
+        UseNrThreads := Registry.ReadInteger('UseNrThreads');
+      end else begin
+        UseNrThreads := 1;
+      end;
     end
     else
     begin
@@ -542,6 +560,10 @@ begin
       SheepServer := 'http://v2d5.sheepserver.net/';
       ResizeOnLoad := False;
       ShowProgress := true;
+      PNGTransparency := 2;
+      ShowTransparency := False;
+      NrTreads := 1;
+      UseNrThreads := 1;
     end;
     Registry.CloseKey;
     { Render }
@@ -876,6 +898,11 @@ begin
       Registry.WriteBool('ShowProgress', ShowProgress);
       Registry.WriteBool('KeepBackground', KeepBackground);
       Registry.WriteString('FunctionLibrary', defLibrary);
+
+      Registry.WriteBool('ShowTransparency', ShowTransparency);
+      Registry.WriteInteger('PNGTransparency', PNGTransparency);
+      Registry.WriteInteger('NrTreads', NrTreads);
+      Registry.WriteInteger('UseNrThreads', UseNrThreads);
     end;
     { Display }
     if Registry.OpenKey('\Software\' + APP_NAME + '\Display', True) then